Your next step: DevOps and reliable application delivery

Project brief

 Why networking matters to an application team  A deployment can start successfully while users cannot reach it. The application may listen on the wrong address, a port may not be published, DNS may be wrong or a policy may block the path. DevOps work connects development and operations practices to deliver and operate changes reliably; tools alone do not define it. 
 A local portfolio project   Write a small static web page and keep it in version control.  Serve it locally, bound to a deliberate local address and port.  Record the service address, DNS/name choice and expected HTTP response.  Containerise it if your computer supports the runtime.  Automate a check, make one change and show the before/after result.  Document how to stop it and restore the previous working version.  
 Build pipelines can validate and package a change. Deployment makes a version available; monitoring checks its behaviour afterwards. Keep credentials out of source control and logs. Infrastructure state and backups can contain secrets too. 
 Next learn Linux, Git, scripting, containers, CI/CD concepts and observability. Practise small repeatable deployments before adding complex orchestration. A networking foundation helps you follow the request from client to name resolution, connection, application and response. 

Evidence worksheet
Goal:
Audience and requirements:
Devices/services and versions:
Diagram and address plan:
Allowed traffic (source, destination, protocol/port):
Intentionally blocked traffic:
Build steps:
Expected result for each test:
Actual result and evidence:
One deliberate fault in an isolated copy:
Investigation and correction:
Rollback and cleanup:
What I would improve next:

Do not include real passwords, personal data or private company configurations. No certification or job outcome is promised. Cloud projects begin on paper; check current charges and cleanup before creating provider resources.